Book Image

Extending Puppet - Second Edition

By : Alessandro Franceschi, Jaime Soriano Pastor
Book Image

Extending Puppet - Second Edition

By: Alessandro Franceschi, Jaime Soriano Pastor

Overview of this book

Puppet has changed the way we manage our systems, but Puppet itself is changing and evolving, and so are the ways we are using it. To tackle our IT infrastructure challenges and avoid common errors when designing our architectures, an up-to-date, practical, and focused view of the current and future Puppet evolution is what we need. With Puppet, you define the state of your IT infrastructure, and it automatically enforces the desired state. This book will be your guide to designing and deploying your Puppet architecture. It will help you utilize Puppet to manage your IT infrastructure. Get to grips with Hiera and learn how to install and configure it, before learning best practices for writing reusable and maintainable code. You will also be able to explore the latest features of Puppet 4, before executing, testing, and deploying Puppet across your systems. As you progress, Extending Puppet takes you through higher abstraction modules, along with tips for effective code workflow management. Finally, you will learn how to develop plugins for Puppet - as well as some useful techniques that can help you to avoid common errors and overcome everyday challenges.
Table of Contents (19 chapters)
Extending Puppet Second Edition
About the Authors
About the Reviewer

Measuring performance

When we start to have a remarkable number of resources on a node (in the order of several hundreds or thousands), compilation and application time of a node catalog grows to uncomfortable levels.

If the number of the nodes to manage is big, even small tunings and optimizations of our code can bring interesting results.

For this reason, it is useful to have tools and techniques that permit us to measure Puppet's performance metrics at our disposal.

Puppet Metrics

Puppet itself provides some options that help us understand where time is spent during its activities.

At the end of each Puppet run, it is possible to see a detailed report on the time spent for each kind of activity; on puppet.conf, we can enable reports with the following option:

report = true # Enable client's reporting

We can have a summary of the run times with the following option:

summarize = true # Print a summary of the Puppet transaction

At the end of a Puppet run, we can have metrics that let us understand...